Subtract 42/32 from 90/70
1st number: 1 20/70, 2nd number: 1 10/32
90/70 - 42/32 is -3/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 32 is 1120
Next, find the equivalent fraction of both fractional numbers with denominator 1120 - For the 1st fraction, since 70 × 16 = 1120,
90/70 = 90 × 16/70 × 16 = 1440/1120 - Likewise, for the 2nd fraction, since 32 × 35 = 1120,
42/32 = 42 × 35/32 × 35 = 1470/1120 - Subtract the two like fractions:
1440/1120 - 1470/1120 = 1440 - 1470/1120 = -30/1120 - After reducing the fraction, the answer is -3/112
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